package com.isprint.jslx.httpsclient;

import com.jfinal.log.Log;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.ConnectException;
import java.net.URL;

/**
 * 发送https的工具类
 *
 * @author HYL
 * @create 2017-07-15 上午7:51
 **/
public class HttpsClient {

    private static Log log=Log.getLog("HttpsClient");


    /**
     * https请求发送
     * @param requestUrl 请求地址
     * @param params 请求参数
     * @param requestMethod 请求方法
     * @return
     */
    public static String  httpsRequest(String requestUrl,String params,String requestMethod){
        StringBuffer buffer=new StringBuffer();
        InputStream inputStream=null;
        OutputStream outputStream=null;
        BufferedReader bufferedReader=null;
        try {
            // 创建SSLContext对象，并使用我们指定的信任管理器初始化
            TrustManager[] tm = {new MyX509TrustManager()};
            SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
            sslContext.init(null, tm, new java.security.SecureRandom());
            // 从上述SSLContext对象中得到SSLSocketFactory对象
            SSLSocketFactory ssf = sslContext.getSocketFactory();

            URL url = new URL(requestUrl);
            HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
            conn.setSSLSocketFactory(ssf);

            conn.setDoOutput(true);
            conn.setDoInput(true);
            conn.setUseCaches(false);
            // 设置请求方式（GET/POST）
            conn.setRequestMethod(requestMethod);

            // 当outputStr不为null时向输出流写数据
            if (null != params) {
                outputStream = conn.getOutputStream();
                // 注意编码格式
                outputStream.write(params.getBytes("UTF-8"));
            }

            // 从输入流读取返回内容
            inputStream = conn.getInputStream();
            InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
            bufferedReader = new BufferedReader(inputStreamReader);
            String str = null;
            buffer = new StringBuffer();
            while ((str = bufferedReader.readLine()) != null) {
                buffer.append(str);
            }

            // 释放资源
            bufferedReader.close();
            inputStreamReader.close();
        } catch (ConnectException ce) {
            log.error("连接超时：{}", ce);
        } catch (Exception e) {
            log.error("https请求异常：{}", e);
        }finally {
            if (bufferedReader != null) {
                try {
                    bufferedReader.close();
                }catch (Exception e){
                    log.error("流关闭异常"+e.getMessage());
                }
            }
            if (outputStream != null) {
                try {
                    outputStream.close();
                }catch (Exception e){
                    log.error("流关闭异常"+e.getStackTrace().toString());
                }
            }
        }
        return buffer.toString();
    }
}
